Explorer 2WD V6-245 4.0L SOHC VIN E EFI (1997)
All interior courtesy lamps are turned OFF when any of the following occurs:
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All the doors are closed and the illuminated entry feature is not active.
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The ignition switch is turned to RUN.
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Vehicle speed is over 8 kph (5 mph).
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A power door lock command is received before the five seconds have elapsed for two-step unlock.
Interior Lamp Relay
The GEM controls the interior lamps illuminated entry function with the interior lamp relay. The relay is activated by applying ground to the relay coil
through C283-12, circuit 1008 (LG/O), and is deactivated by removing the ground.
Panel Dimmer Switch
The panel dimmer switch controls the interior lamps by supplying power to the interior lights. The battery saver relay supplies power to the panel
dimmer switch. When the battery saver function is active, power will not be supplied to the dimmer switch circuit and the panel dimmer switch will not
turn on the interior lighting.
Remote Anti-Theft Personality (RAP) Module
The Remote Anti-theft Personality (RAP) module sends a signal to the GEM on the illuminated entry request circuit to indicate a request to turn the
illuminated entry feature ON or OFF. Circuit 1013 (BR/LG) is normally sent 12 volts by the GEM. The RAP module shorts this circuit to ground with a
pulse of either of the following lengths:
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200 ms pulse from RAP receiver assembly request illuminated entry ON.
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300 ms pulse from the RAP module receiver assembly request illuminated OFF.
The illuminated entry feature is another feature which activates the interior lamps. The GEM illuminates the interior lamps when either front door handle
is lifted or an unlock signal is received from the RAP module. The illuminated entry feature will be canceled when any of the following conditions are
met:
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25 seconds have elapsed since the illuminated entry feature was activated and the interior lamp control is not activated.
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The GEM receives a request from the RAP module (remote transmitter lock button pressed) and the courtesy lamp control is not activated.
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The ignition is in the RUN or START position and the interior lamp control is not activated.
The illuminated entry inputs are:
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Door open warning lamp switch (grounded when the handle is lifted; an open circuit when the handle is released).
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Ignition switch in the key-in, ACCY and RUN position.
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RAP illuminated entry request.
The GEM sleep mode outputs are:
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NONE. (All circuits are deactivated during sleep mode.)
If a change in any of the above inputs occur while the GEM is asleep, the GEM will wake up and monitor all of its inputs and have the ability to activate
any of its outputs.
Delayed Accessory
The module provides temporary power to the power windows, the rear wiper (for parking of the rear wiper off the liftgate glass), and the message center
for ten minutes after the ignition switch is moved from the RUN to OFF position. If during this ten-minute period either front door is opened, the
delayed accessory relay will be de-energized.
One-Touch Window
When the power switch for driver window control is held down (between 0.04 and 0.4 second) and then released with the ignition switch in RUN OR
ACC, the driver window will automatically move to its full down position.
Only the driver window has this feature. Holding the driver window switch down longer allows the operator to stop the window as soon as the switch is
released.
Two-Step Unlock
To activate the two-step unlock system the GEM requires that there must be two transitions of the unlock switch. After the GEM senses the first
transition, it unlocks that door where the transition occurs and illuminates the courtesy lamps. There is a five-second window that begins from the first
transition of the unlock switch. If within that window, a second unlock command is sensed by the GEM, the GEM will energize a relay to unlock all the
doors after the second transition of the unlock switch returns to the vertical position in the door lock cylinder.
GEM Diagnostics
The GEM diagnostic system is composed of the NGS tester, the GEM, and all GEM associated components. They allow you to determine if a GEM
subsystem has a fault and provides the capability to isolate the fault.
Diagnostic Instructions
As in all microprocessor systems, communications must be provided to monitor system operation and to allow diagnosis of any concerns that may
develop in the system. Diagnosis communication is provided through the Data Link Connector (DLC) and the New Generation STAR (NGS) Tester or
equivalent.
